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Group of element – Rare Earth
Name |
Symbol |
Atomic Number |
Atomic weigth |
Cerium |
Ce |
58 |
140.115 |
Praseodymium |
Pr |
59 |
140.90765 |
Neodymium |
Nd |
60 |
144.24 |
Promethium |
Pm |
61 |
-144.9127 |
Samarium |
Sm |
62 |
150.36 |
Europium |
Eu |
63 |
151.965 |
Gadolinium |
Gd |
64 |
157.25 |
Terbium |
Tb |
65 |
158.92534 |
Dysprosium |
Dy |
66 |
162.5 |
Holmium |
Ho |
67 |
164.93032 |
Erbium |
Er |
68 |
167.26 |
Thulium |
Tm |
69 |
168.93421 |
Ytterbium |
Yb |
70 |
173.04 |
Lutetium |
Lu |
71 |
174.967 |
Thorium |
Th |
90 |
232.0381 |
Protactinium |
Pa |
91 |
231.03588 |
Uranium |
U |
92 |
238.0289 |
Neptunium |
Np |
93 |
-237.0482 |
Plutonium |
Pu |
94 |
-244.0642 |
Americium |
Am |
95 |
-243.0614 |
Curium |
Cm |
96 |
-247.0703 |
Berkelium |
Bk |
97 |
-247.0703 |
Californium |
Cf |
98 |
-251.0796 |
Einsteinium |
Es |
99 |
-252.083 |
Fermium |
Fm |
100 |
-257.0951 |
Mendelevium |
Md |
101 |
-258.0984 |
Nobelium |
No |
102 |
-259.1011 |
Lawrencium |
Lr |
103 |
-262.1098 |